飞机着陆数值仿真及机场道面动载特性研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (1) : 308-318.

论文

飞机着陆数值仿真及机场道面动载特性研究

孟宪锋1,2，罗萌3,4，江辉3，戴鹏1,2，高学奎1,2，赵星燕3，季金文1,2

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Numerical simulation of aircraft landing and dynamic load characteristics of airport pavement

MENG Xianfeng1,2, LUO Meng3,4, JIANG Hui3, DAI Peng1,2, GAO Xuekui1,2, ZHAO Xingyan3, JI Jinwen1,2

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摘要

为研究飞机着陆滑跑过程民用机场道面动荷载特性，以Boeing737-800机型为例，基于动力学仿真软件VI-Aircraft，建立了机身、起落架及轮胎三维数值仿真模型，根据某机场道面实测平整度数据创建道面仿真模型，形成了一套考虑气动力变化特性的飞机着陆冲击仿真方法，并通过相关起落架系统落震试验以及飞机-地面运动学理论解析两方面验证了仿真方法的可靠性。此外，系统讨论了各类着陆状态参数对道面动载特性的影响，明确了不同着陆状态参数影响下道面动载系数量化取值范围，揭示了各着陆状态参数对道面动载响应的影响规律及影响机理。研究结果表明：随着陆质量、接地速度及滚转角增大，道面动载响应显著增强；随着陆航向速度增大，道面动载响应明显减小；而随俯仰角增大，道面动载响应整体呈现波动减小的趋势。飞机着陆过程中道面动载系数敏感性因素从大到小依次为：航向速度、接地速度、着陆质量、滚转角与俯仰角，充分考虑各着陆状态参数影响，一般情况下道面动载系数DIM分布区间为1.18~1.80。研究成果可进一步拓展用于飞机着陆跑道桥的分析研究。

Abstract

In order to study the dynamic load characteristics of civil airport pavement during aircraft landing and taxiing, taking the Boeing 737-800 aircraft as an example, a three-dimensional numerical simulation model of the fuselage, landing gear and tires was established, based on the dynamic simulation software VI-Aircraft. The pavement simulation model was created according to the measured roughness data of an airport pavement, forming a set of simulation methods for aircraft landing impact considering aerodynamic variation characteristics. The reliability of the simulation method was verified by two methods of landing gear system drop test and aircraft ground kinematics theory analysis. In addition, the influence of various landing state parameters on the dynamic load characteristics of the pavement was systematically discussed, the quantitative value of the dynamic load coefficient of the pavement under the influence of different landing state parameters was clarified, and the influence rule and mechanism of various landing state parameters on the dynamic load response of the pavement were revealed. The results show that with the increase of landing mass, descending speed and roll angle, the dynamic load response of pavement is significantly enhanced. With the increase of heading speed, the dynamic load response of pavement decreases significantly and with the increase of pitch angle, the dynamic load response of pavement shows a trend of decreasing fluctuation. In the process of aircraft landing, the sensitivity factors of the dynamic load coefficient of the pavement from large to small are: heading speed, descending speed, landing mass, roll angle and pitch angle. In full consideration of the impact of various landing state parameters, the distribution range of the dynamic load coefficient DIM of the pavement is 1.18~1.80 in general The research results can be further extended to the analysis and research of aircraft landing on runway bridge.

导出引用

孟宪锋1,2，罗萌3,4，江辉3，戴鹏1,2，高学奎1,2，赵星燕3，季金文1,2. 飞机着陆数值仿真及机场道面动载特性研究[J]. 振动与冲击, 2024, 43(1): 308-318

MENG Xianfeng1,2, LUO Meng3,4, JIANG Hui3, DAI Peng1,2, GAO Xuekui1,2, ZHAO Xingyan3, JI Jinwen1,2. Numerical simulation of aircraft landing and dynamic load characteristics of airport pavement[J]. Journal of Vibration and Shock, 2024, 43(1): 308-318

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